ahead of the summit, trump met with microsoft cofounder and philanthropist bill gates. >> we had a good conversation about innovation. how it can help in health, education, wide range of conversation about power of innovation. >> gates wasn't the only big name at trump tower yesterday, ray lewis and profootball hall of famer jim brown discussed issues affecting the african-american community, but the visit that turned the most heads yesterday, rapper kanye west. >> mr. trump, kanye, what did you discuss in your meeting today? >> just friends, just friends. good ma doing well. long time. friends for a long time. >> what did you discuss? >> life. >> kanye, you've talked about 2020. >> kanye, are you considering performing at the inauguration this year? >> no comment about your meeting with the president-elect. president-elect of the united states, nothing you can say? >> i just want to take a picture right now. >> apparently they discussed life. while he remained tight lipped, west later sent out a series of tweets of what he and trump talked about, i wanted to meet to discuss multicultur